Image:SAL Thru Tropical Florida.jpg|thumb|350px|right|Postcard illustrating the allure of streamliner travel to Florida, along with the "citrus" paint scheme used on SAL's Electro-Motive Diesel|EMD diesel locomotives from 1939 to 1954.
The '''Seaboard Air Line Railroad''' , which styled itself "The Route of Courteous Service," was an United States|American railroad
whose corporate existence extended from April 14, 1900 until July 1, 1967, when it merged with the Atlantic Coast Line Railroad
, its longtime rival, to form the Seaboard Coast Line Railroad
. The company was headquartered in Norfolk, Virginia
, until 1958, when its main offices were relocated to Richmond, Virginia
. The Seaboard Air Line Railway Building
in Norfolk's historic West Freemason Street Area Historic District|Freemason District
still stands and has been converted to luxury apartments.
At the end of 1925 SAL operated 3,929 miles of...